<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right"
                         :min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
          数据类型一定要和取出的json中的一致，否则没法回填
          因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <el-form-item label="讲师头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="String(teacher.avatar)"/>

        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload"
                   @click="imagecropperShow=true">更换头像
        </el-button>
        <!--
        v-show：是否显示上传组件
        :key：类似于id，如果一个页面多个图片上传控件，可以做区分
        :url：后台上传的url地址
        @close：关闭上传组件
        @crop-upload-success：上传成功后的回调 -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss'"
          field="file"
          @close="close"
        @crop-upload-success="cropSuccess"/>
      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary"
                   @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import teacherApi from "../../../api/teacher/teacher";
import ImageCropper from '../../../components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default {
  components:{ImageCropper,PanThumb },
  data() {
    return {
      teacher: {
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: ''
      },
      imagecropperShow: false,
      imagecropperKey:0,
      BASE_API: process.env.BASE_API, // 接口API地址
      saveBtnDisabled: false // 保存按钮是否禁用,
    }
  },
  created() {
    this.init()
    },
  watch: {
    $route(to, from) {
      console.log('watch $route')
      this.init()
    }
  },
  methods: {
    init(){
      if (this.$route.params && this.$route.params.id) {
        const id = this.$route.params.id
        this.getInfo(id)
      } else {
        this.teacher ={}
      }
    },
    // 根据id查询记录
    getInfo(id) {
      teacherApi.getTeacherInfo(id)
        .then(response => {
        this.teacher = response.data.item
      })
        .catch((response) => {
        this.$message({
          type: 'error',
          message: '获取数据失败'
        })
      })
    },

    saveOrUpdate() {
      this.saveBtnDisabled = true
      if (!this.teacher.id) {

        this.saveTeacher()
      } else {
        this.updateTeacher()
      }
    },
// 保存
    saveTeacher() {
          teacherApi.addTeacher(this.teacher)
      .then(response =>{
        this.$message({
          type: 'success',
          message: '添加成功!'
        });
        // 刷新列表 路由跳转
        this.$router.push({ path: '/teacher/table' })

      })
      .catch(error =>{
        this.$message({
          type: 'info',
          message: '添加失败'
        });
      })
    },



    // 根据id更新记录
    updateTeacher() {
      this.saveBtnDisabled = true
      teacherApi.updateTeacher(this.teacher)
        .then(response => {
        return this.$message({
          type: 'success',
          message: '修改成功!'
        })
      })
        .then(resposne => {
        this.$router.push({ path: '/teacher/table' })
      })
        .catch((response) => {
// console.log(response)
        this.$message({
          type: 'error',
          message: '修改失败！'
        })
      })
    },


    // 上传成功后的回调函数
    cropSuccess(data) {
      console.log(data)
      this.imagecropperShow = false
      this.teacher.avatar = data.url
    // 上传成功后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
      this.imagecropperKey = this.imagecropperKey + 1
    },

    // 关闭上传组件
    close() {
      this.imagecropperShow = false
    // 上传失败后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
      this.imagecropperKey = this.imagecropperKey + 1
    }




  }
}
</script>
